|
【结 构 式】 
|
【分子编号】20929 【品名】(2S)-6-[[(benzyloxy)carbonyl]amino]-2-hydroxyhexanoic acid 【CA登记号】 |
【 分 子 式 】C14H19NO5 【 分 子 量 】281.3086 【元素组成】C 59.78% H 6.81% N 4.98% O 28.44% |
合成路线1
该中间体在本合成路线中的序号：(III)This compound can be obtained by two related ways: 1) The reaction of L-lysine (I) with NaNO2 - H2SO4 in water gives 6-amino-2(S)-hydroxyhexanoic acid (II), which is protected with benzyl chloroformate as usual yielding the N-benzyloxycarbonyl compound (III). The condensation of (III) with L-proline benzyl ester (IV) by means of hydroxybenzotriazole (HBT) and dicyclohexylcarbodiimide (DCC) affords the acylated proline ester (V), which is esterified with 4-phenylbutylphosphonous acid (VI) by means of DCC and dimethylaminopyridine (DMAP), and oxidized with NaIO4 to give the protected phosphonic ester (VIII). Finally, this compound is debenzylated by hydrogenation of Pd/C in methanol. The phosphonous acid (VI) is obtained by reaction of 4-phenyl-1-butene (VII) with sodium hypophosphite by means of azobisisobutyronitrile (AIBN). 2) The condensation of acylated proline ester (V) with dibenzyl 4-phenylbutylphosphonate (IX) by means of PCl5, triethylamine and DMAP also gives the protected phosphonic ester (VIII). The dibenzyl phosphonate (IX) is obtained by condensation of 4-phenylbutyl chloride (X) with dibenzyl phosphite (XI) by means of NaH in DMF.
| 【1】 Karanewsky, D.S.; Petrillo, E.W. Jr. (E.R. Squibb & Sons, Inc.); Orally active phosphonyl hydroxyacyl prolines and processes for preparing phosphonyl hydroxyacyl prolines. AU 8666133; EP 0229520; JP 1987164691; US 4745196 . |
| 【2】 Prous, J.; Castaner, J.; SQ-29852. Drugs Fut 1989, 14, 6, 533. |
| 【3】 Powell, J.R.; Karanewsky, D.S.; Dejneka, T.; DeForrest, J.M.; Petrillo, E.W. Jr.; Perri, M.G.; Badia, M.C.; Loots, M.J.; Cushman, D.W.; (Phosphinyloxy)acyl amino acid inhibitors of angiotensin converting enzyme (ACE). 1. Discovery of (S)-1-[6-amino-2-[[hydroxy(4-phenylbutyl)phosphinyl]oxy]-1-oxohexyl]-L-proline, a novel orally acting inhibitor of ACE. J Med Chem 1988, 31, 1, 204. |
| 中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
|---|---|---|---|---|---|---|
| (I) | 20927 | L-lysine | 56-87-1 | C6H14N2O2 | 详情 | 详情 |
| (II) | 20928 | (2S)-6-amino-2-hydroxyhexanoic acid | C6H13NO3 | 详情 | 详情 | |
| (III) | 20929 | (2S)-6-[[(benzyloxy)carbonyl]amino]-2-hydroxyhexanoic acid | C14H19NO5 | 详情 | 详情 | |
| (IV) | 20930 | benzyl (2S)-2-pyrrolidinecarboxylate | 16652-71-4 | C12H15NO2 | 详情 | 详情 |
| (V) | 20931 | benzyl (2S)-1-((2S)-6-[[(benzyloxy)carbonyl]amino]-2-hydroxyhexanoyl)-2-pyrrolidinecarboxylate | C26H32N2O6 | 详情 | 详情 | |
| (VI) | 20932 | 4-phenylbutylphosphinic acid | C10H15O2P | 详情 | 详情 | |
| (VII) | 20933 | 1-(3-butenyl)benzene | 768-56-9 | C10H12 | 详情 | 详情 |
| (VIII) | 20934 | benzyl (2S)-1-((2S)-6-[[(benzyloxy)carbonyl]amino]-2-[[hydroxy(4-phenylbutyl)phosphoryl]oxy]hexanoyl)-2-pyrrolidinecarboxylate | C36H45N2O8P | 详情 | 详情 | |
| (IX) | 20935 | dibenzyl 4-phenylbutylphosphonate | C24H27O3P | 详情 | 详情 | |
| (X) | 20936 | 1-(4-chlorobutyl)benzene | 4830-93-7 | C10H13Cl | 详情 | 详情 |
| (XI) | 12507 | dibenzyl phosphonate; Dibenzyl phosphite | 17176-77-1 | C14H15O3P | 详情 | 详情 |